Welcome to part 2 of the satellite dish teardown. Today we will be looking at the feed horn of the satellite dish that has spent the last 10 years being an ornament on my house. This will include looking at the radome, the shape of the feed horn and the internal features to make it work well.
So, this weekend was a perfectly normal weekend at the home of Swamphen Enterprises. It was one of those weekends spent sorting out all those things in the house you never quite get round to doing. One of these was deal with the satellite dish that the previous owner had left attached to the wall, but with the cable cut. This satellite dish has been acting as a decoration for the last 10 or so years, and it was time for this to end. You will be familiar with this dish, as it starred as one of my #AntennaInTheWild tweets and in my reflector blog post about how a perforated dish can act as a solid piece of metal: https://swamphen.co.uk/new-blog/2019/6/10/when-a-grid-becomes-a-solid. Having removed it from its long-held position, it was only fair to do a teardown of it!
I recently went to Cork on holiday, and one of the many great places I visited was Cork City Goal. The Goal was a stunning building originally opened in 1824 as part of a wave of new prisons which considered things like hygiene and moral improvement to be important for prisoner reform. The building has been beautifully restored, and the museum has a great self-guided tour you can do. However, the main attraction for me turned out to be nothing about incarceration and all about radio waves.
I had got nearly to the end of the self-guided tour and was heading into the gift shop (which unusually was not at the end of the tour), when I overheard one of the guides say:
‘I’m going to switch Marconi on’